Labelled atoms
[化] 标记原子; 示踪原子
🧩 词语组成解析
a. 贴上标签的
n. 原子（atom的复数）
🗣️ 情景例句
Don't drink then drive.
不要酒后开车。
There are no birds of this year in last year's nests.
事过境迁。
Mr. Huawei always has a lot of meetings to attend.
华威先生总有开不完的会。